Machine for making paper bags.



M. L. HIRSGH & M.v H. EIGHBER-G. MACHINE FOR MAKING PAPER. BAGS.APPLICATION FILED MAY I7, 1909.

9469967.. Patented Jan. I8, 1910.

. 3 SHEETS-SHEET 1.

M. L. HIRSCH L M.. H. EICHBERG.

MACHINE FOR MAKING PAPER BAGS. APPLICATION FILED MAY 17; 1909.-

@ipge Patented Jan. 18, 1.9M).

3 SHEETS-SHEET 2.

Wi hmmm MACHINE POR MAKING PAPER BAGS.

APPLICATION :FILED MAY 17, 1909.

Patented Jan. 18,1910.

3 SHEETS-SHEET 3.

UNITEE sTATEs PATENT oEEioE.

MONTEFORE Il. HIRSCH AND MAURICE H. EICHBERG, 0F BALTIMORE, MARYLAND.

MACHINE FOR MAKING PAPER BAGS.

Specication of Letters Patent.

Patented Jan. 18, 1910.

Application filed May 17, 1909. Serial No. 496,361.

To all. whom it may concern;

Be it known that we, MoN'rEFoRE L. HIRSCH and MAURICE H. EICHBERG,citizens of the United States, residing at Baltimore, State of Maryland,have invented new and useful Improvements in Machines for Making PaperBags, of which the following is a specification.

Our presentl `invention relating to paperbag manufacture, has to do withmachines for feeding a tube of paper in the direction of its length,dividing the tube into sections, and closing each section at one endthereof to provide the same with a bottom.

The present invention contemplates the provision of means for applyingpaste to each paper-tube section and folding the same, in such mannerthat the closure of one end of the section is eifected properly andquickly and without retardation of the endwise passage of the sectionsso that it is practical to run the machine at a high rate of speed andsecure a great output in a short period of time. This will be betterappreciated when it is stated that machines constructed in accordancewith our present invention and at present in practical operation, eacheffect the closure of 500 tube sections per minute, and that one of saidmachines recently effected the closure of 255,000 tube sections in acontinuous operation of ten hours duration.

The present invention also contemplates the provision in combinationwith means for severing sections from a rapidly fed tube, of means forholding each section only during the infinitesimal period occupied bythe said sepa-ration, and then permittin the section to move forwardlywithout hin rance or delay, this being materially advantageoussince itconduces to the runnin of the machine at a very high rate of spee Withthe foregoing in mind, the invention will be fully understood from thefollowing description and claims when the same are read in connectionwith the drawings, ac-

com anying and forming part of this speciication, 'in which: y

Figure 1 is a longitudinal vertical section of so much of a paper bagmaking machine as is necessary to illustrate the best practicalembodiment of our invention that we have as yet devised; the saidsection being taken in the plane indicated by the line l--l of Fig. 2.Fig. 2 is a transverse view taken in the plane of the line 2 2 of Fig.1, looking the roll H opposite to that shown in Fig. 2.

Fig. 6 is a. detail perspective View showing a portion of the bag as-thesame appears when tucked or folded. Fig. 7 is a similar view showingsaid portion as completely closed.

Similar letters of reference designate corresponding parts in all of theviews of the drawings.

In the practice of our invention, the paper tube is formed and fedforwardly in the direction of its length in the ordinary well knownmanner or in any other manner consonant with the successful practice ofour invention, and the bag sections are severed from the tube by theusual striker A, which operates from below upward, in combination withthe serrated edges B and C, or by any other means suitable to thepurpose.

, Forward of the transverse path of the striker A is a plate or othersmall support D over whichl the paper tube passes to the means forholding the tube sections only during the quick severance of thesections from the tube. The said holding means comprises narrowtransverse bars or ribs E revoluble toward and from each other andadapted to meet with the tube section between them and hold said sectiononly during the instant ofthe severance and to then release the sectionand thereby avoid retarding the forward progress thereof. v We prefer toarrange the bars E on the perimeters of opposed transverse rolls orshafts F of such diameter that ample clearance is afforded between theirperimeters for the free and easy passage of the successive tubesections. When severed from the tube, each tube section is fed forwardlyover a small plate or other support G until its forward 'y chine. Theroll H is provided in itsperiphery with a tuck or fold-receiving openingJ extending in the direction of its length, and in said opening J isarranged a tuck or foldclamping bar K that is movable laterally orsidewise toward and from the rear side wall of opening J, with referenceto the direction in which the roll rotates. Carried by the rotary head Iis a reciprocatory tucker-blade L and a paste-applier M, whileinterposed between the head I and a paste-receptacle N is a roll Padapted to receive paste from the receptacle and supply an adequatequantity of the same to the paste-applier M as the latter wipes past theroll.

When the forward portion of a tube section is received between the rollH and the head I, as before described, the tucker blade L, engaging the'tube section at a suitable distance behind the forward fend thereof,forces a portion of said section intothe opening J of roll H and therebyforms the transverse tuck or fold in the tube section. Thereupon thepaste-applier M puts an adequate quantity of paste on the tube sectionback of the tuck or fold thereof. Then practically coincident with andimmediately following the recession of the tucker blade, the bar Kclamps and securely holds the tuck or fold against the rear wall of theopening J, and the tuck or fold is so held until it reaches a pointbetween the roll H and a roll R which latter coperates with the roller Hto press the flap ofthe tube against the paste-bearing major portionthereof and thereby completes the bottomin of the bag. After passlngbetween the rol s H and R, the bags are successively chuted betweenguide means S and guard means T to a conveyer U or any other meansplaced to receive the same.

The rolls F are mounted in the manner shown in Fig. 1 or in any otherworkmanlike manner, and are driven in the directions indicated by arrowsthrough gearing that we have deemed it unnecessary to illustrate. It iswell to state, however, that said rolls F are so timed that the bars Ewill meet with a tube section between them coincident with eachcoperation of the striker A with the serrated edges \B and C.

At V is a uard that we prefer to employ to prevent un u upward movementof the tube sections w ile en route between the rolls F and thecoperating` roll H and head I. The roll H is rovided with trunnions h,'ournaled in suitable frame work i, and the ar K is pivoted at c 7c insaid roll and is backed and moved toward the rear wall of the opening Jby spring strips Z shown in Figs. l and 5. At one end the bar K isprovided with a crank m on which is a lateral projection n, preferablyin the form of an anti-friction roller as shown, designed to coperatewith a fixed cam W located adjacent one end of the roll H. It will benoted i by reference to Fig. l that the fixed cam W is provided at 1with anabrupt shoulder positioned to permit at the proper time thebefore described movement of bar K toward the back wall of the openingJ, and by comparison of Figs. l and Q it will be understood that at theproper point in advance of the shoulder 1*, the periphery of the cam isincreased in diameter to coperate vwith the roller n and move the bar Kaway from the rear wall of the opening J and thereby release the tuck orfold of the tube section.

The rotary head I comprises a shaft having trunnions s journaled in theframe sides i, the paste-applier M, holders t for the paste-applier,which holders t are fixed by set screws u on the reduced intermediateportion of the shaft and are connected to the paste-applier by screws o,the recipro-v catory tucker blade L having end portions :v extendingthrough and guided in slots c in the shaft, castinvs screwed orotherwise connected to the sa1d end portions m, and having shoes a kandinwardly extend-ing projections b', guides d suitably fixed onthe shaftand receiving the end portions and having wear plates e adjustably fixedby screws f and jam-nuts g', and coiled springs h interposed between thereduced or t1attened portion ofthe shaft and the projections b, andhavino for their otlice to retract the tucker blade L. In order toproject the tucker blade L against the action of the springs h', weprovide parts i adapted to coperate with the shoes c,thevsaid;. arts ibeing preferably in the form of antiriction rollers loosely mounted on atrailsverse shaft j', connected through hangers lc with the frame sides.By virtue of this provision it will be manifest that incidental to eachrotation of the head I, the antifriction rollers i', by co erating withthe shoes a', will project the b ade L beyond the faceof thepaste-applier M, and then when the shoes a ass out of engagement withthe anti-frictlon rollers i, the springs la. will operate to retract thetucker blade L so that the latter will not interfere with the wiping ofthe face of the paste-applier M past the paste roll P. See in thisconnection the dotted lines in Fig. l. The paste roll P has trunnions mjournaled in suitable bearings, and the roll R is provided withtrunnions 7" journaled in movable bearings which are backed by springssuch as 15'; the said springs havin for their office to yieldingly pressthe ro R against the perimeter of the roll H. c

One of the trunnions k of the roll H is equipped with a spur gear Awhich is designed to be connected with and derive motion from anotherrvrotary part of the machine through a train of gearing which we havedeemed it unnecessary to illustrate, andone of the trunnions s of thehead I is provided wth a spur gear B', intermeshed with ner disclosed inthe patent.

thespur gear A', and also with a spur gear C on the trunnion m of thepaste roll P.

We would also have it understood that while it isnot necessary topositively rotate the roll R through a spur gear connection, yet 1fdeemed expedient such connection may be employed between the rolls H andR.

The gear connection described between roll H, head l and paste-roll P issubstantlally the same as that shown in our prior patent Number 908,570of November 10, 1908, the rolls F are connected by spur gears (notshown) in the same manner as the rolls I and J of said patent, the gearon the lower roll F is connected with the gear A. on roll H by aninterposed gear (not shown) after the manner disclosed in the patent,and power is transmitted from a transverse shaft (not shown) to the gearon the lower of the rolls F, also after the man- The driving connectionof the arts is, however, unimportant, and manifestly any appropriatedriving connection may be employed in the discretion of the maker of themachine.

As before stated, the construction herein illustrated and describedconstitutes the best practical embodiment of our present invention ofwhich we are at the present cognizant, but vit will be understood thatin the future practice of the invention such changes or modificationsmay be made as do not 1nvolve departure from the scope of our inventionas vdefined in the claims appended. Having described our invention, whatwe claim and desire to secure by Letters-Pat ent, is:

1. In a machine for making paper bags, the combination of a rotarydevice, a pasteapplier carried by said device, means for supplying pasteto said paste-applier, a tucker blade carried by and movable outward andinwardwith respect to the rotary device, a second rotary device opposedto the first-named rotary device and having an opening to receive thetucker blade when the same is projected, means carried by and movablewith respect to the second-namedl rotary device for taking hold of thetuck or fold in a bag, positive means for projecting the tucker blade ofthe first-named rotary device, resilient meansY for# retracting saidblade when the same is out of engagement with the projecting means,resilient means for moving the tuck-holding means against a tuckcoincidently with the retraction of the tucker blade, means arranged tocooperate with the second-named rotary dev1ce and press the portion of abag at one side of the tuck therein against the portion of the` bag atthe opposite side of the tuck, means for moving the tuckholding meansaway from the tuck whilesaid means is opposed to the pressing means, andbag-receiving and guiding means extending from the lower adjacentportions of the secondnamed rotary device and the pressing means.

2. In a machine for making paper bags, the combination of frame sides,han ers fixed thereto, a transverse shaft carrie by said hangers andprovided with parts i', a rotary head comprising a shafthaving trunnionsjournaled in the frame sides and also having slots, guides vfixed on theshaft, a reciprocatory tucker blade havin end portions extending throughand gulded in the slots of the' shaft and also guided in the guides onthe shaft and provided with shoes and with inwardly extendingprojections, springs interposed between the shaft and the said inwardlyextending projections, l

and a paste-applier, means for supplying paste to said paste-applier ofthe rotary head, a roll disposed below the rotary head and havingtrunnions journaled in the frame Isides and also having an openingadapted to receive the tucker blade when the same is projected, a barpivoted in said roll and having at oneend a crank, spring strips backingsaid bar and adapted to move the same toward the rear wall of saidopening, means arranged to coperate with said roll and press the portionof a bag at one side of the tuck therein against the portion of the bagat the opposite side of the tuck, a cam fixed to one frame side forcoperating with the crank of the pivoted bar and moving said bar awayfrom the tuck while said bar is opposed to the pressing means, a bagreceiving and guiding means extending from the lower adjacent portionsof the roll and the pressing means.

3. The combination in a machine for making paper bags,'0f frame sides,hangers xed thereto,`a transverse shaft carried by said hangers andprovided with parts z", and a rotary head comprising a shaft havingtrunnions journaled in the frame sides and also having slots, guidesfixed on the shaft, a reciprocatory tucker blade having end portionsextending throu h and guided in the slots of the shaft an also guided inthe guides on the shaft and provided with shoes and with inwardlyextending projections,

and springsin'terposed between the shaft and the said inwardly extendingprojections.

4. The combination in a machine for making paper bags, of frame sides,han ers fixed thereto, a transverse shaft carrie by said hangers andprovided with parts z", and a rotary head comprising a shaft havingtrunnions journaled in the frame sides an also having slots and aflattened portion, guides fixed on the shaft and having adjustably fixedwear plates, a reciprocatory tucker blade havin end portions movable inthe slots and guides and against the wear plates of the latter, castingsfixed on the said end portions and having shoes adapted to cooperatewith the said parts z" and also having inwardly extending projections,and springs interposed between the said rojections and the at portion ofthe sha t.

5. The combination in a machine for making paper bags, of frame sides,han ers fixed thereto, a transverse shaft carrie b said hangers andprovided with parts z' and a rotary head comprisin a shaft havintrunnions journaled in the graine sides an also having slots and aattened portion, guides iixed on the shaft and having adjustably fixedwear plates, a reciprocatory tucker blade havin end portions movable inthe slots and guides and against the wear plates of the latter, castingsfixed on the said end portions and having shoes adapted to coperate withthe said arts z" and also having inwardly extendm projections, springsinterposed between t e said projectlons and a lat portion of the shaft,a paste-applier arranged alongside the tucker blade, and holdersconnected to the pasteapplier and fixed on the Hat portion of the shaft.

In testimon whereof we have hereunto set our hands 1n presence of twosubscribing witnesses.

MONTEFORE L. HIRSCH. MAURICE H. EICHBERG. Witnesses:

l H. M. GUnIscH,

E. M. THOMPSON.

